//引入请求方法
import {request} from '../../request/index.js';
import regeneratorRuntime from '../../lib/runtime/runtime';




// pages/goods_detail/index.js
Page({

  /**
   * 页面的初始数据
   */
  data: {
    goodsObj:{},
    //商品是否被收藏
    isCollect:false
  },


  //商品对象
  GoodsInfo:{},

  /**
   * 生命周期函数--监听页面加载
   */
  onShow: function () {

    let pages =  getCurrentPages();
    let currentPage = pages[pages.length-1];
    let options = currentPage.options;

    const {goods_id} = options;
    //console.log(options);
    this.getGoodsDetail(goods_id);

    
  },
  //获取商品数据
  async getGoodsDetail(goods_id){
    const res = await request({url:"https://api-hmugo-web.itheima.net/api/public/v1/goods/detail",data:{goods_id}});
    //console.log(res);

   
    const goodsObj = res.data.message;
    this.GoodsInfo = goodsObj;
    
    //获取缓存中的商品收藏数组
    let collect = wx.getStorageSync("collect")||[];
    //判断当前商品是否被收藏
    let isCollect = collect.some(v=>v.goods_id===this.GoodsInfo.goods_id);
    this.setData({
      goodsObj:{
        goods_name:goodsObj.goods_name,
        goods_price:goodsObj.goods_price,
        goods_introduce:goodsObj.goods_introduce.replace(/\.webp/g,'.jpg'),
        pics:goodsObj.pics
      },
      isCollect
      
    })
  },


  //点击轮播图预览
  handlePreviewImage(e){
    //图片预览数组
    const urls = this.GoodsInfo.pics.map(v=>v.pics_mid);
    //传递过来的数值
    const current = e.currentTarget.dataset.url;
    wx.previewImage({
      current: current, // 当前显示图片的http链接
      urls: urls// 需要预览的图片http链接列表
    })
  },

  //点击加入购物车
  handleCartAdd(){
    //获取缓存中的购物车数组
    let cart = wx.getStorageSync("cart")||[];
    //判断商品对象是否存在与购物车数组
    let index = cart.findIndex(v=>v.goods_id===this.GoodsInfo.goods_id);
    if(index===-1){
      //不存在 第一次添加
      this.GoodsInfo.num = 1;
      this.GoodsInfo.checked = true;
      cart.push(this.GoodsInfo);
    }else{
      //数据已存在 num++
      cart[index].num++;
    }
    //把购物车重新添加回缓存中
    wx.setStorageSync("cart",cart);
    //弹窗提示
    wx.showToast({
      title: '加入成功',
      mask: true
    });
      
  },
  //点击收藏
  handleCollect(){
    let isCollect = false;
    //获取缓存中的商品缓存数组
    let collect = wx.getStorageSync("collect")||[];
    //判断该商品是否被收藏过
    let index = collect.findIndex(v=>v.goods_id===this.GoodsInfo.goods_id);
    //当index不为-1表示已收藏过 让它取消收藏
    if(index!==-1){
      collect.splice(index,1);
      //isCollect = false;
      wx.showToast({
        title: '取消成功',
        icon: 'success',
        mask: true
      });
        
    }else{
      collect.push(this.GoodsInfo);
      isCollect = true;
      wx.showToast({
        title: '已收藏成功',
        icon: 'success',
        mask: true
      });
    }
    //把数组存入缓存中
    wx.setStorageSync("collect", collect);
    //修改data中的属性
    this.setData({
      isCollect
    })
      
      
  }

})